PTA GMs Guide will be provided only if someone not only shows express interest in being the GM/DM, but also makes sure that they can dedicate the time to it to be able to do it well enough. Don't ask for the link to the GMs Guide just to get it. If that happens even once, the person will not be permitted to participate in the sessions, and someone else will be designated DM/GM regardless.

I've personally already got ideas for a campaign and am willing to DM/GM, but would prefer to just run through a campaign as a player, maybe even somewhat of an assistant to a DM/GM rather than be one. Just putting that out there for other players to know.